EP2382891A1 - Platinum microparticles production apparatus - Google Patents
Platinum microparticles production apparatus Download PDFInfo
- Publication number
- EP2382891A1 EP2382891A1 EP10735754A EP10735754A EP2382891A1 EP 2382891 A1 EP2382891 A1 EP 2382891A1 EP 10735754 A EP10735754 A EP 10735754A EP 10735754 A EP10735754 A EP 10735754A EP 2382891 A1 EP2382891 A1 EP 2382891A1
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- EP
- European Patent Office
- Prior art keywords
- electrode
- platinum
- platinum microparticles
- microparticles
- range
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims abstract description 169
- 229910052697 platinum Inorganic materials 0.000 title claims abstract description 85
- 239000011859 microparticle Substances 0.000 title claims abstract description 79
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 22
- 230000000452 restraining effect Effects 0.000 abstract description 4
- 210000004209 hair Anatomy 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 6
- 230000005684 electric field Effects 0.000 description 3
- LEVWYRKDKASIDU-QWWZWVQMSA-N D-cystine Chemical compound OC(=O)[C@H](N)CSSC[C@@H](N)C(O)=O LEVWYRKDKASIDU-QWWZWVQMSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 description 2
- 235000018417 cysteine Nutrition 0.000 description 2
- 229960003067 cystine Drugs 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000003057 platinum Chemical class 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/14—Making metallic powder or suspensions thereof using physical processes using electric discharge
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D20/00—Hair drying devices; Accessories therefor
- A45D20/04—Hot-air producers
- A45D20/08—Hot-air producers heated electrically
- A45D20/10—Hand-held drying devices, e.g. air douches
- A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D2200/00—Details not otherwise provided for in A45D
- A45D2200/20—Additional enhancing means
Definitions
- the present invention relates generally to platinum microparticles generators, and more particularly to a platinum microparticles generator that emits platinum microparticles produced by an electric discharge and protects hairs from damage caused by active oxygen.
- platinum microparticles generators which emit platinum microparticles produced by an electric discharge and protect hairs from damage caused by the active oxygen.
- This platinum microparticles generator comprises a linear first electrode, a board-shaped second electrode and an applying means for applying a voltage between the first and second electrodes.
- the first electrode contains at least platinum.
- the second electrode comprises an outlet opening, which is a circular through-hole, located so as to face one end of the first electrode. Then, a part of the platinum contained in the first electrode is converted to microparticles by the electric discharge produced between the first and second electrodes, and the microparticles are emitted outward through the outlet opening.
- the platinum microparticles generator generates ozone with the electric discharge inevitably.
- a voltage applied by the applying means is reduced and a current value of the electric discharge is held down and thereby generation of the ozone is restrained.
- the above-mentioned platinum microparticles generator has a problem not to be able to emit a sufficient amount of platinum microparticles, if the current value is held down.
- a platinum microparticles generator of the present invention comprises a linear first electrode, a board-shaped second electrode, and an applying means.
- the first electrode contains at least platinum.
- the second electrode comprises an outlet opening, which is a circular through-hole, located so as to face one end of the first electrode.
- the applying means applies a voltage between the first and second electrodes.
- the first electrode has an outside diameter in a range of 0.03 [mm] to 0.10 [mm]
- the outlet opening has an inside diameter in a range of 1.0 [mm] to 4.5 [mm].
- the platinum microparticles generator which can emit a sufficient amount of platinum microparticles while restraining generation of ozone without increase or decrease of the current value of the electric discharge, can be provided.
- said one end of the first electrode has a flat surface being perpendicular to a longitudinal direction of the first electrode.
- the platinum microparticles generator can inhibit the platinum microparticles emission from decreasing on a sudden with progress of use time.
- the inside diameter of the outlet opening is set to a value in a range of 1.5 [mm] to 2.0 [mm].
- the platinum microparticles generator can emit a more sufficient amount of platinum microparticles without increase or decrease of the current value of the electric discharge.
- a platinum microparticles generator 1 of the embodiment comprises a first electrode 2, a second electrode 3, a housing 4, and an applying means 5, as shown in Fig. 1 .
- the first electrode 2 is formed into a thin linearity, and has an outside diameter ⁇ 1, and is made of platinum or platinum-plated metal or platinum-plated alloy.
- one end of the first electrode 2 does not have a surface formed into a radical shape or a sphere shape, but has a flat surface 21 being perpendicular to a longitudinal direction of the first electrode 2.
- the second electrode 3 is made of stainless steel and is formed into a flat board-shape. Then, the second electrode 3 is located in a place across only a distance D (1.5 [mm]) in the longitudinal direction to the flat surface 21 of the first electrode 2. Then, the second electrode 3 comprises an outlet opening 31. located so as to face said one end of the first electrode 2.
- the outlet opening 31 is a circular through-hole having an inside diameter ⁇ 2.
- the housing 4 is made of, for example, polycarbonate resin and is formed into generally a rectangular box shape and supports the first and second electrodes 2, 3 in predetermined positions, respectively.
- the applying means 5 applies a voltage between the first and second electrodes 2, 3 and comprises a high voltage generating circuit with an igniter method, as shown in Fig. 1 .
- the applying means 5 applies a high voltage to generate platinum microparticles so that the first and second electrodes 2, 3 become negative and positive electrodes, respectively. Then, an electric discharge is produced between the flat surface 21 of the first electrode 2 and the second electrode 3. Then, positive ions are pulled to a side of the first electrode 2, which is the negative electrode, and collides with the flat surface 21. As a result, a part of platinum contained in the first electrode 2 is converted to platinum microparticles by a sputtering phenomenon. Then, the platinum microparticles are emitted to a side of the second electrode 3. Then, the platinum microparticles are emitted in a direction of an arrowed line A shown in Figs. 1 and 2 .
- a change in an amount of ozone, which is generated when the outside diameter ⁇ 1 of the first electrode 2 is variously changed in a range of 0.03 [mm] to 0.20 [mm], will be described with reference to Fig. 3 .
- a horizontal axis in Fig. 3 shows a time (min) that has passed since the applying means 5 starts to apply the high voltage
- a vertical axis in Fig. 3 shows a density (ppm) of the ozone, which is generated by the platinum microparticles generator 1.
- a value of a current, flowing by the electric discharge is set so as to always become constant (e.g., 35 [ ⁇ A]) in every value of the outside diameter ⁇ 1.
- the ozone density becomes a value in a range of about 0.8 [ppm] to 1.0 [ppm] in 10 minutes when the outside diameter ⁇ 1 is set to be in a range of 0.15 [mm] to 0.20 [mm].
- the ozone density becomes 0.572 [ppm] in 10 minutes when the outside diameter ⁇ 1 is set to 0.10 [mm], and that is, it is found that the ozone density can be reduced in about half of the ozone density in the range of 0.15 [mm] to 0.20 [mm].
- a change in an amount of platinum microparticles, which is emitted when the outside diameter ⁇ 1 is variously changed in a range of 0.03 [mm] to 0.25 [mm], will be described with reference to Fig. 4 .
- a horizontal axis in Fig. 4 shows the outside diameter ⁇ 1 (mm)
- a vertical axis in Fig. 4 shows the amount of the platinum microparticles (ng/100min) emitted in the direction of the arrowed line A through the outlet opening 31.
- the current value is set so as to always become constant, as well as Fig. 3 .
- the amount of the emitted platinum microparticles becomes a value in a range of 3.3 [ng/lOmin] to 5.3 [ng/10min] when the outside diameter ⁇ 1 is set to be in a range of 0.15 [mm] to 0.25 [mm].
- the amount of the emitted platinum microparticles becomes a value in a range of 8.0 [ng/10min] to 10.9 [ng/10min] when the outside diameter ⁇ 1 is set to be in a range of 0.03 [mm] to 0.10 [mm], and that is, it is found that the amount of the emitted platinum microparticles becomes about twice as much as that in the range of 0.15 [mm] to 0.25 [mm].
- Fig. 5A shows the look of the electric line of force, which is produced between the first and second electrodes 2, 3 when the outside diameter ⁇ 1 is set to 0.15 [mm].
- Fig. 5B shows the look of the electric line of force, which is produced between the first and second electrode 2, 3 when the outside diameter ⁇ 1 is set to 0.25 [mm].
- a change in an amount of platinum microparticles, which is emitted when the inside diameter ⁇ 2 of the outlet opening 31 is variously changed, will be described with reference to Fig. 6 .
- a horizontal axis in Fig. 6 shows the inside diameter ⁇ 2 (mm)
- a vertical axis in Fig. 6 shows the amount of the platinum microparticles (ng/10min) emitted in the direction of the arrowed line A through the outlet opening 31.
- a value of a current, flowing by the electric discharge is set so as to always become constant (e.g., 35 [ ⁇ A]) in every value of the inside diameter ⁇ 2.
- a change in an amount of platinum microparticles, which is emitted when a distance D of the flat surface 21 to the outlet opening 31 is variously changed in a range of 1.0 [mm] to 3.5 [mm] (see Fig. 2 ), will be described with reference to Fig 7 .
- a horizontal axis in Fig. 7 shows the distance D (mm)
- a vertical axis in Fig. 7 shows the amount of the platinum microparticles (ng/10min) emitted in the direction of the arrowed line A through the outlet opening 31.
- the current value is set so as to always become constant, as well as Fig. 6 .
- the inside diameter ⁇ 2 becomes the more the platinum microparticles emission increases for example, an influence of an electric field strength is considered.
- the smaller the inside diameter ⁇ 2 becomes the easier the electric line of force, extending toward the side of the second electrode 3 from the flat surface 21, pass through the outlet opening 31 in the direction of the arrowed line A.
- the amount of the platinum microparticles, emitted like a brick in the direction of the arrowed line A increases.
- Fig. 8A shows the look of the electric line of force, which is produced between the first and second electrodes 2, 3 when the inside diameter ⁇ 2 is set to 1.5 [mm].
- Fig. 8B shows the look of the electric line of force, which is produced between the first and second electrode 2, 3 when the inside diameter ⁇ 2 is set to 3.0 [mm].
- the electric line of force in Fig. 8A shows the smaller inside diameter ⁇ 2 passes through the outlet opening 31 in the direction of the arrowed line A more easily than that in Fig. 8B .
- the distances D shown in Figs. 8A and 8B , respectively, are different from each other.
- the platinum microparticles generator 1 of the present embodiment is characterized in that the outlet opening 31 has the inside diameter ⁇ 2 in a range of 1.0 [mm] to 4.5 [mm], under a condition that the first electrode 2 has the outside diameter ⁇ 1 in a range of 0.03 [mm] to 0.10 [mm]. That is, the platinum microparticles generator 1 can reduce the ozone density by about half without increase or decrease of the current value of the electric discharge, and then can secure the amount of the emitted platinum microparticles being equal to or more than about 75% of a peak value (12 [ng/10min]). Accordingly, the platinum microparticles generator 1 can emit a sufficient amount of platinum microparticles while restraining generation of ozone.
- the platinum microparticles generator 1 can secure the amount of the emitted platinum microparticles being equal to or more than about 90% of said peak value, and then can emit a more sufficient amount of platinum microparticles.
- the outside diameter ⁇ 1 is set to be smaller than 0.03 [mm].
- the inside diameter ⁇ 2 is set to be smaller than 1.0 [mm], because the platinum microparticles emitted from the first electrode 2 collides with a penumbra of the outlet opening 31 and thereby an emission efficiency decreases.
- one end of the first electrode 2 of the present embodiment has a flat surface 21 being perpendicular to a longitudinal direction of the first electrode 2, and thus the platinum microparticles generator 1 can inhibit the platinum microparticles emission from decreasing on a sudden with progress of use time.
- Fig. 9 shows the look of a change in the ozone density to three different kinds of current values of the electric discharge.
- Fig. 10 shows a change in the amount of the emitted platinum microparticles to three different kinds of current values of the electric discharge.
- the more the current value increases the more the platinum microparticles emission increases.
- the current values are fixed to 35 [ ⁇ A], and each measurement is performed.
- the current values are fixed other value, such as 16 [ ⁇ A] or 60 [ ⁇ A]
- the outside diameter ⁇ 1 is set to be equal to or less than 0.10 [mm] and the current value is more than 50 [ ⁇ A]
- the first electrode 2 is worn out intensely.
- the current value is set to be in a range of 20 [ ⁇ A] to 50 [ ⁇ A], and further it is more preferred that the current value is set to about 35 [ ⁇ A].
- the platinum microparticles generator 1 is incorporated in, for example, a hair drier and is used. As explained above, hears produce active oxygen when being exposed to ultraviolet rays, and are damaged by the active oxygen and thus the damage causes to remove hair cuticles. As a reason for that, it is thought that a cystine which is a protein included in hairs is changed to a cysteine acid by the active oxygen. In contract, the platinum microparticles are provided to hairs, and thereby the active oxygen is erased by antioxidant effect of the platinum microparticles. Therefore, the platinum microparticles can prevent the cystine from being changed to the cysteine acid.
- platinum microparticles it is necessary to emit the platinum microparticles at least equal to or more than 3.6 [ng/10min], to reduce the damage to hairs caused by the ultraviolet rays enough. It is desirable to secure the platinum microparticles emission equal to or more than 10 [ng/10min] in an initial state, in order to secure the platinum microparticles emission equal to or more than 3.6 [ng/10min] in a state where a hair drier is near the end of its own life (for example, it is used for about 500 hours).
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- Oxygen, Ozone, And Oxides In General (AREA)
- Inert Electrodes (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Spark Plugs (AREA)
Abstract
Description
- The present invention relates generally to platinum microparticles generators, and more particularly to a platinum microparticles generator that emits platinum microparticles produced by an electric discharge and protects hairs from damage caused by active oxygen.
- In general, it is known that hears produce active oxygen when being exposed to ultraviolet rays and are damaged by the active oxygen and thus the damage causes to remove hair cuticles. Also, it is know that platinum provides antioxidant effect. Thus, in the past, there have been proposed various types of platinum microparticles generators which emit platinum microparticles produced by an electric discharge and protect hairs from damage caused by the active oxygen. One such example is described in Japanese Patent Application Laid-Open No.
2008-23063 published on February 7, 2008 - By the way, the platinum microparticles generator generates ozone with the electric discharge inevitably. The higher the ozone density becomes, the more the ozone becomes harmful to a human body. Therefore, it is hoped that generation of the ozone is restrained. In contrast, there is an idea that a voltage applied by the applying means is reduced and a current value of the electric discharge is held down and thereby generation of the ozone is restrained. However, the above-mentioned platinum microparticles generator has a problem not to be able to emit a sufficient amount of platinum microparticles, if the current value is held down.
- It is an object of the present invention to provide a platinum microparticles generator which can emit a sufficient amount of platinum microparticles while restraining generation of ozone.
- A platinum microparticles generator of the present invention comprises a linear first electrode, a board-shaped second electrode, and an applying means. The first electrode contains at least platinum. The second electrode comprises an outlet opening, which is a circular through-hole, located so as to face one end of the first electrode. The applying means applies a voltage between the first and second electrodes. In a first feature of the present invention, the first electrode has an outside diameter in a range of 0.03 [mm] to 0.10 [mm], and the outlet opening has an inside diameter in a range of 1.0 [mm] to 4.5 [mm]. In the present invention, because the outlet opening has the inside diameter in the range of 1.0 [mm] to 4.5 [mm] under a condition that the first electrode has the outside diameter in the range of 0.03 [mm] to 0.10 [mm], the platinum microparticles generator, which can emit a sufficient amount of platinum microparticles while restraining generation of ozone without increase or decrease of the current value of the electric discharge, can be provided.
- In one embodiment, said one end of the first electrode has a flat surface being perpendicular to a longitudinal direction of the first electrode. In the present invention, because said one end of the first electrode has the flat surface being perpendicular to the longitudinal direction of the first electrode, the platinum microparticles generator can inhibit the platinum microparticles emission from decreasing on a sudden with progress of use time.
- In one embodiment, the inside diameter of the outlet opening is set to a value in a range of 1.5 [mm] to 2.0 [mm]. In the present invention, because the inside diameter of the outlet opening is set to a value in a range of 1.5 [mm] to 2.0 [mm], the platinum microparticles generator can emit a more sufficient amount of platinum microparticles without increase or decrease of the current value of the electric discharge.
- Preferred embodiments of the invention will now be described in further details. Other features and advantages of the present invention will become better understood with regard to the following detailed description and accompanying drawings where:
-
Fig. 1 is an oblique perspective figure of a platinum microparticles generator according to an embodiment of the present invention; -
Fig. 2 is a cross-section view of first and second electrodes according to said embodiment of the present invention; -
Fig. 3 is a characteristic figure which shows relations of an ozone density and an outside diameter of the first electrode according to said embodiment of the present invention; -
Fig. 4 is a characteristic figure which shows relations of a platinum microparticles emission and an outside diameter of the first electrode according to said embodiment of the present invention; -
Figs. 5A and 5B are illustrations which show lines of electric force between both the first and second electrodes according to said embodiment of the present invention, whereinFig. 5A shows the lines in a case where the outside diameter of the first electrode is set to 0.15 [mm], andFig. 5B shows the lines in a case where the outside diameter of the first electrode is set to 0.25 [mm]; -
Fig. 6 is a characteristic figure which shows relations of a platinum microparticles emission and an inside diameter of the outlet opening according to said embodiment of the present invention; -
Fig. 7 is a characteristic figure which shows relations of a platinum microparticles emission and a distance between both the first and second electrodes according to said embodiment of the present invention; -
Figs. 8A and 8B are illustrations which show lines of electric force between both the first and second electrodes according to said embodiment of the present invention, whereinFig. 8A shows the lines in a case where the inside diameter of the outlet opening is set to 1.5 [mm], andFig. 8B shows the lines in a case where the inside diameter of the outlet opening is set to 3.0 [mm]; -
Fig. 9 is a characteristic figure which shows relations of the ozone density and a current value of an electric discharge according to said embodiment of the present invention; and -
Fig. 10 is a characteristic figure which shows relations of a platinum microparticles emission and the current value of the electric discharge according to said embodiment of the present invention. - Hereinafter, an embodiment of the present invention will be described with reference to
Figs. 1 to 10 . Aplatinum microparticles generator 1 of the embodiment comprises afirst electrode 2, asecond electrode 3, ahousing 4, and anapplying means 5, as shown inFig. 1 . - As shown in
Figs. 1 and2 , thefirst electrode 2 is formed into a thin linearity, and has an outside diameter ϕ1, and is made of platinum or platinum-plated metal or platinum-plated alloy. In addition, one end of thefirst electrode 2 does not have a surface formed into a radical shape or a sphere shape, but has aflat surface 21 being perpendicular to a longitudinal direction of thefirst electrode 2. - As shown in
Figs. 1 and2 , thesecond electrode 3 is made of stainless steel and is formed into a flat board-shape. Then, thesecond electrode 3 is located in a place across only a distance D (1.5 [mm]) in the longitudinal direction to theflat surface 21 of thefirst electrode 2. Then, thesecond electrode 3 comprises an outlet opening 31. located so as to face said one end of thefirst electrode 2. The outlet opening 31 is a circular through-hole having an inside diameter ϕ2. - As shown in
Fig. 1 , thehousing 4 is made of, for example, polycarbonate resin and is formed into generally a rectangular box shape and supports the first andsecond electrodes second electrodes Fig. 1 . - Then, the applying means 5 applies a high voltage to generate platinum microparticles so that the first and
second electrodes flat surface 21 of thefirst electrode 2 and thesecond electrode 3. Then, positive ions are pulled to a side of thefirst electrode 2, which is the negative electrode, and collides with theflat surface 21. As a result, a part of platinum contained in thefirst electrode 2 is converted to platinum microparticles by a sputtering phenomenon. Then, the platinum microparticles are emitted to a side of thesecond electrode 3. Then, the platinum microparticles are emitted in a direction of an arrowed line A shown inFigs. 1 and2 . - In the
platinum microparticles generator 1, a change in an amount of ozone, which is generated when the outside diameter ϕ1 of thefirst electrode 2 is variously changed in a range of 0.03 [mm] to 0.20 [mm], will be described with reference toFig. 3 . In addition, a horizontal axis inFig. 3 shows a time (min) that has passed since the applying means 5 starts to apply the high voltage, and then a vertical axis inFig. 3 shows a density (ppm) of the ozone, which is generated by theplatinum microparticles generator 1. However, a value of a current, flowing by the electric discharge, is set so as to always become constant (e.g., 35 [µA]) in every value of the outside diameter ϕ1. - As shown in
Fig. 3 , the smaller the outside diameter ϕ1 of thefirst electrode 2 becomes, the more the ozone generation decreases. In particular, the ozone density becomes a value in a range of about 0.8 [ppm] to 1.0 [ppm] in 10 minutes when the outside diameter ϕ1 is set to be in a range of 0.15 [mm] to 0.20 [mm]. In contrast, the ozone density becomes 0.572 [ppm] in 10 minutes when the outside diameter ϕ1 is set to 0.10 [mm], and that is, it is found that the ozone density can be reduced in about half of the ozone density in the range of 0.15 [mm] to 0.20 [mm]. - Then, a change in an amount of platinum microparticles, which is emitted when the outside diameter ϕ1 is variously changed in a range of 0.03 [mm] to 0.25 [mm], will be described with reference to
Fig. 4 . In addition, a horizontal axis inFig. 4 shows the outside diameter ϕ1 (mm), and then a vertical axis inFig. 4 shows the amount of the platinum microparticles (ng/100min) emitted in the direction of the arrowed line A through theoutlet opening 31. However, the current value is set so as to always become constant, as well asFig. 3 . - As shown in
Fig. 4 , the smaller the outside diameter ϕ1 becomes, the more the platinum microparticles emission increases. In particular, the amount of the emitted platinum microparticles becomes a value in a range of 3.3 [ng/lOmin] to 5.3 [ng/10min] when the outside diameter ϕ1 is set to be in a range of 0.15 [mm] to 0.25 [mm]. In contrast, the amount of the emitted platinum microparticles becomes a value in a range of 8.0 [ng/10min] to 10.9 [ng/10min] when the outside diameter ϕ1 is set to be in a range of 0.03 [mm] to 0.10 [mm], and that is, it is found that the amount of the emitted platinum microparticles becomes about twice as much as that in the range of 0.15 [mm] to 0.25 [mm]. - Thus, as the reason that the smaller the outside diameter ϕ1 becomes the more the platinum microparticles emission increases, for example, an influence of an electric field strength is considered. In other words, it is considered that the smaller the outside diameter ϕ1 becomes, the more an electric line of force concentrates on the
flat surface 21 and the more the platinum microparticles emitted by the sputtering phenomenon increases. -
Fig. 5A shows the look of the electric line of force, which is produced between the first andsecond electrodes Fig. 5B shows the look of the electric line of force, which is produced between the first andsecond electrode Fig. 5 , the smaller the outside diameter ϕ1 becomes, the more the electric field strength around theflat surface 21 increases. - Then, a change in an amount of platinum microparticles, which is emitted when the inside diameter ϕ2 of the
outlet opening 31 is variously changed, will be described with reference toFig. 6 . In addition, a horizontal axis inFig. 6 shows the inside diameter ϕ2 (mm), and then a vertical axis inFig. 6 shows the amount of the platinum microparticles (ng/10min) emitted in the direction of the arrowed line A through theoutlet opening 31. However, a value of a current, flowing by the electric discharge, is set so as to always become constant (e.g., 35 [µA]) in every value of the inside diameter ϕ2. - As shown in
Fig. 6 , the smaller the inside diameter ϕ2 becomes, the more the platinum microparticles emission increases. Then, when the inside diameter ϕ2 is in a range of 1.0 [mm] to 4.5 [mm], the amount of the emitted platinum microparticles is in a range of 9 [ng/10min] to 12 [ng/10min] and is equivalent to or more than about 75% of a peak value (12 [ng/10min]). In addition, when the inside diameter ϕ2 is in a range of 1.5 [mm] to 2.0 [mm], the amount of the emitted platinum microparticles is equivalent to or more than about 90% of said peak value. - Then, a change in an amount of platinum microparticles, which is emitted when a distance D of the
flat surface 21 to theoutlet opening 31 is variously changed in a range of 1.0 [mm] to 3.5 [mm] (seeFig. 2 ), will be described with reference toFig 7 . In addition, a horizontal axis inFig. 7 shows the distance D (mm), and then a vertical axis inFig. 7 shows the amount of the platinum microparticles (ng/10min) emitted in the direction of the arrowed line A through theoutlet opening 31. However, the current value is set so as to always become constant, as well asFig. 6 . - As shown in
Fig. 7 , even if the distance D is changed, a change is hardly seen in the amount of the emitted platinum microparticles. Thus, although all distances D described inFigs. 1 to 6 are set to 1.5 [mm], there is not an obvious effect to be provided by limiting the distance D. - Thus, as the reason that the smaller the inside diameter ϕ2 becomes the more the platinum microparticles emission increases, for example, an influence of an electric field strength is considered. In other words, the smaller the inside diameter ϕ2 becomes, the easier the electric line of force, extending toward the side of the
second electrode 3 from theflat surface 21, pass through the outlet opening 31 in the direction of the arrowed line A. As a result, it is considered that the amount of the platinum microparticles, emitted like a brick in the direction of the arrowed line A, increases. -
Fig. 8A shows the look of the electric line of force, which is produced between the first andsecond electrodes Fig. 8B shows the look of the electric line of force, which is produced between the first andsecond electrode Fig. 8A and Fig. 8B , the electric line of force inFig. 8A , showing the smaller inside diameter ϕ2, passes through the outlet opening 31 in the direction of the arrowed line A more easily than that inFig. 8B . In addition, the distances D, shown inFigs. 8A and 8B , respectively, are different from each other. - Hereinafter, an operation of the
platinum microparticles generator 1 of the present embodiment will be described. Theplatinum microparticles generator 1 of the present embodiment is characterized in that theoutlet opening 31 has the inside diameter ϕ2 in a range of 1.0 [mm] to 4.5 [mm], under a condition that thefirst electrode 2 has the outside diameter ϕ1 in a range of 0.03 [mm] to 0.10 [mm]. That is, theplatinum microparticles generator 1 can reduce the ozone density by about half without increase or decrease of the current value of the electric discharge, and then can secure the amount of the emitted platinum microparticles being equal to or more than about 75% of a peak value (12 [ng/10min]). Accordingly, theplatinum microparticles generator 1 can emit a sufficient amount of platinum microparticles while restraining generation of ozone. - In addition, if the inside diameter ϕ2 is in a range of 1.5 [mm] to 2.0 [mm], the
platinum microparticles generator 1 can secure the amount of the emitted platinum microparticles being equal to or more than about 90% of said peak value, and then can emit a more sufficient amount of platinum microparticles. However, in terms of strength and productivity, it is not preferred that the outside diameter ϕ1 is set to be smaller than 0.03 [mm]. Then, it is not preferred that the inside diameter ϕ2 is set to be smaller than 1.0 [mm], because the platinum microparticles emitted from thefirst electrode 2 collides with a penumbra of theoutlet opening 31 and thereby an emission efficiency decreases. - Then, one end of the
first electrode 2 of the present embodiment has aflat surface 21 being perpendicular to a longitudinal direction of thefirst electrode 2, and thus theplatinum microparticles generator 1 can inhibit the platinum microparticles emission from decreasing on a sudden with progress of use time. - By the way,
Fig. 9 shows the look of a change in the ozone density to three different kinds of current values of the electric discharge. As can be expected fromFig. 9 , the more the current value increases, the more the ozone generation increases. Then,Fig. 10 shows a change in the amount of the emitted platinum microparticles to three different kinds of current values of the electric discharge. As can be expected fromFig. 10 , the more the current value increases, the more the platinum microparticles emission increases. - In
Figs. 3 to 8 , the current values are fixed to 35 [µA], and each measurement is performed. However, even if the current values are fixed other value, such as 16 [µA] or 60 [µA], the smaller the outside diameter ϕ1 becomes, the more the ozone generation decreases and the more the platinum microparticles emission increases. In addition, if the outside diameter ϕ1 is set to be equal to or less than 0.10 [mm] and the current value is more than 50 [µA], thefirst electrode 2 is worn out intensely. Thus, it is preferred that the current value is set to be in a range of 20 [µA] to 50 [µA], and further it is more preferred that the current value is set to about 35 [µA]. - It is preferred that the
platinum microparticles generator 1 is incorporated in, for example, a hair drier and is used. As explained above, hears produce active oxygen when being exposed to ultraviolet rays, and are damaged by the active oxygen and thus the damage causes to remove hair cuticles. As a reason for that, it is thought that a cystine which is a protein included in hairs is changed to a cysteine acid by the active oxygen. In contract, the platinum microparticles are provided to hairs, and thereby the active oxygen is erased by antioxidant effect of the platinum microparticles. Therefore, the platinum microparticles can prevent the cystine from being changed to the cysteine acid. - It is necessary to emit the platinum microparticles at least equal to or more than 3.6 [ng/10min], to reduce the damage to hairs caused by the ultraviolet rays enough. It is desirable to secure the platinum microparticles emission equal to or more than 10 [ng/10min] in an initial state, in order to secure the platinum microparticles emission equal to or more than 3.6 [ng/10min] in a state where a hair drier is near the end of its own life (for example, it is used for about 500 hours).
- Although the present invention has been described with reference to certain preferred embodiments, numerous modifications and variations can be made by those skilled in the art without departing from the true spirit and scope of this invention, namely claims.
Claims (3)
- A platinum microparticles generator comprising:a linear first electrode containing at least platinum;a board-shaped second electrode comprising an outlet opening, which is a circular through-hole, located so as to face one end of the first electrode; andan applying means for applying a voltage between the first and second electrodes,wherein the first electrode has an outside diameter in a range of 0.03 [mm] to 0.10 [mm],wherein the outlet opening has an inside diameter in a range of 1.0 [mm] to 4.5 [mm].
- The platinum microparticles generator as claimed in claim 1, wherein said one end of the first electrode has a flat surface being perpendicular to a longitudinal direction of the first electrode.
- The platinum microparticles generator as claimed in claim 1 or 2, wherein the inside diameter of the outlet opening is set to a value in a range of 1.5 [mm] to 2.0 [mm].
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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JP2009015970 | 2009-01-27 | ||
JP2009015948 | 2009-01-27 | ||
JP2009189047A JP5507923B2 (en) | 2009-01-27 | 2009-08-18 | Platinum particle generator |
JP2009189046A JP5452126B2 (en) | 2009-01-27 | 2009-08-18 | Platinum particle generator |
PCT/JP2010/050799 WO2010087285A1 (en) | 2009-01-27 | 2010-01-22 | Platinum microparticles production apparatus |
Publications (3)
Publication Number | Publication Date |
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EP2382891A1 true EP2382891A1 (en) | 2011-11-02 |
EP2382891A4 EP2382891A4 (en) | 2014-11-05 |
EP2382891B1 EP2382891B1 (en) | 2015-12-23 |
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EP10735754.3A Active EP2382891B1 (en) | 2009-01-27 | 2010-01-22 | Platinum microparticles production apparatus |
Country Status (5)
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US (1) | US8367006B2 (en) |
EP (1) | EP2382891B1 (en) |
CN (1) | CN102281792B (en) |
TW (1) | TWI403054B (en) |
WO (1) | WO2010087285A1 (en) |
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JP5238609B2 (en) * | 2009-05-26 | 2013-07-17 | パナソニック株式会社 | Metal fine particle generator |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005118366A (en) * | 2003-10-17 | 2005-05-12 | Takashi Mukai | Dryer |
JP2008023063A (en) * | 2006-07-21 | 2008-02-07 | Matsushita Electric Works Ltd | Hair dryer |
EP2338376A1 (en) * | 2009-11-06 | 2011-06-29 | Panasonic Electric Works Co., Ltd | Hair care device comprising metallic microparticle generation units |
EP2436464A1 (en) * | 2009-05-26 | 2012-04-04 | Panasonic Corporation | Metal microparticle generation device and hair care device provided therewith |
US20120126041A1 (en) * | 2009-08-26 | 2012-05-24 | Panasonic Corporation | Discharge device and electrostatic atomization device comprising same |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001189199A (en) * | 1999-10-22 | 2001-07-10 | Takasago Thermal Eng Co Ltd | Ion generator and charge neutralizing device |
JP2002065344A (en) * | 2000-08-28 | 2002-03-05 | Kyan:Kk | Negative ion generator and hair dryer using the same |
JP2006068581A (en) * | 2004-08-31 | 2006-03-16 | Matsushita Electric Ind Co Ltd | Electrostatic precipitator and air conditioner or air purifier using the same |
JP2007305418A (en) * | 2006-05-11 | 2007-11-22 | Sharp Corp | Ion generating element, ion generater, and electric device |
JP4395786B2 (en) * | 2006-09-22 | 2010-01-13 | パナソニック電工株式会社 | Ion dryer |
JP4868592B2 (en) * | 2007-04-24 | 2012-02-01 | 株式会社アルバック | Alloy nanoparticle preparation method, alloy thin film preparation method, and coaxial vacuum arc deposition apparatus |
CN101347840B (en) * | 2008-09-11 | 2010-09-29 | 清华大学 | Method for preparing metallic Mg nano granular material |
-
2010
- 2010-01-22 CN CN201080004515.9A patent/CN102281792B/en active Active
- 2010-01-22 US US13/138,127 patent/US8367006B2/en active Active
- 2010-01-22 EP EP10735754.3A patent/EP2382891B1/en active Active
- 2010-01-22 WO PCT/JP2010/050799 patent/WO2010087285A1/en active Application Filing
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005118366A (en) * | 2003-10-17 | 2005-05-12 | Takashi Mukai | Dryer |
JP2008023063A (en) * | 2006-07-21 | 2008-02-07 | Matsushita Electric Works Ltd | Hair dryer |
EP2436464A1 (en) * | 2009-05-26 | 2012-04-04 | Panasonic Corporation | Metal microparticle generation device and hair care device provided therewith |
US20120126041A1 (en) * | 2009-08-26 | 2012-05-24 | Panasonic Corporation | Discharge device and electrostatic atomization device comprising same |
EP2338376A1 (en) * | 2009-11-06 | 2011-06-29 | Panasonic Electric Works Co., Ltd | Hair care device comprising metallic microparticle generation units |
Non-Patent Citations (1)
Title |
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See also references of WO2010087285A1 * |
Also Published As
Publication number | Publication date |
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US8367006B2 (en) | 2013-02-05 |
US20110268619A1 (en) | 2011-11-03 |
EP2382891B1 (en) | 2015-12-23 |
WO2010087285A1 (en) | 2010-08-05 |
TW201031067A (en) | 2010-08-16 |
TWI403054B (en) | 2013-07-21 |
CN102281792B (en) | 2014-05-14 |
CN102281792A (en) | 2011-12-14 |
EP2382891A4 (en) | 2014-11-05 |
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